From: Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>
To: linux-raid@vger.kernel.org
Subject: Device role question
Date: Fri, 26 Feb 2010 15:23:31 +0100 [thread overview]
Message-ID: <20100226142331.GA2328@lazy.lzy> (raw)
Hi all,
checking randomly the component of some RAID-10 arrays
(two disks each), with "mdadm -E /dev/sdXY", I noticed
the following.
There is an entry reported, called "Device Role".
On one array, the components are defined, respectively, as:
Active device 0
Active device 1
On another two arrays, it's a bit different.
Active device 0
spare
Why is it "spare" (all are RAID-10 f2)?
Does it make any difference one or the other role, in
this type of RAID?
On the other hand, "mdadm -D /dev/mdX" does not seem
to give any hint on the different roles.
Thanks,
bye,
--
piergiorgio
next reply other threads:[~2010-02-26 14:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-26 14:23 Piergiorgio Sartor [this message]
2010-02-27 5:56 ` Device role question Michael Evans
2010-02-27 8:08 ` Piergiorgio Sartor
2010-02-27 8:55 ` Michael Evans
2010-02-27 9:10 ` Piergiorgio Sartor
2010-02-28 3:34 ` Michael Evans
2010-02-28 10:38 ` Piergiorgio Sartor
2010-02-28 4:41 ` Neil Brown
2010-02-28 10:35 ` Piergiorgio Sartor
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